INTERACTIVE PARASITE LIBRARY
Know the parasite.
Understand the risk.
Explore what parasites actually look like, how they spread, which animals they affect, how veterinarians find them and when people need to take precautions.
THREE WAYS PARASITES AFFECT ANIMALS
Outside, inside or too small to see.
Some parasites are visible on skin or in stool. Others are microscopic or hidden inside the body. Looking normal never rules out infection.
External parasites
Fleas, ticks, lice, mites and flies—including irritation, vector-borne illness and flystrike.
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Internal parasites
Roundworms, hookworms, whipworms, tapeworms, heartworms and lungworms.
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Protozoal parasites
Giardia, coccidia, Toxoplasma and Cryptosporidium—often invisible without laboratory testing.
Explore category ↓CHOOSE WHAT YOU WANT TO UNDERSTAND
Start with a parasite—or your animal.
Filter the library, select a parasite for a quick overview, then open its complete owner guide.
ANIMAL HEALTH AND HUMAN HEALTH
Zoonotic does not mean automatic.
A zoonotic parasite can affect both animals and people, but the real risk depends on the exact organism, exposure route and host. Some require contaminated soil, an infected flea, a mosquito or undercooked meat—rather than simply touching your pet.
Understand parasite testing and household prevention →Built on veterinary and public-health guidance.
Educational illustrations are not diagnostic photographs. Parasite identification, treatment and prevention should be confirmed with a veterinarian familiar with the animal’s species.
Identifying the organism before choosing control
Parasites differ in appearance, life cycle, host, testing, and prevention. Some are microscopic or hidden inside the body, and similar symptoms can occur without parasites. Use the library to understand the suspected organism and prepare questions, not to select a medicine from a photograph. The exact host species and product label matter for safety. Diagnosis and an exposure-control plan are especially important when illness persists despite previous treatment.
Confirm the exact product and coverage
A preventive plan depends on the product's labeled species, age, weight, target organisms, route, and administration interval. Similar names or packaging do not establish that products are interchangeable. Some cover parasites that another does not. Review the current label and patient history with the veterinarian, including previous reactions and other medicines. Record actual administration rather than purchase dates. If a dose is missed or given incorrectly, obtain product-specific advice instead of doubling, combining, or substituting a treatment independently.
Exposure is broader than one lifestyle label
Risk can involve contact animals, vectors, travel, boarding, new arrivals, equipment, food, water, or wildlife, depending on the organism. Indoor housing or a fenced property may reduce some exposures without eliminating all of them. Conversely, prevention should still be tailored rather than chosen without regard to the actual setting. Describe the household or group accurately and review changes over time. Geographic summaries and maps are useful context, but cannot establish an individual animal's infection status or exact risk by themselves.